CN107859350B - Repairing process of old concrete column and template structure used by repairing process - Google Patents
Repairing process of old concrete column and template structure used by repairing process Download PDFInfo
- Publication number
- CN107859350B CN107859350B CN201711083348.1A CN201711083348A CN107859350B CN 107859350 B CN107859350 B CN 107859350B CN 201711083348 A CN201711083348 A CN 201711083348A CN 107859350 B CN107859350 B CN 107859350B
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- China
- Prior art keywords
- concrete
- concrete column
- templates
- pouring
- cross rod
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- Expired - Fee Related
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging
- E04G23/0218—Increasing or restoring the load-bearing capacity of building construction elements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Working Measures On Existing Buildindgs (AREA)
Abstract
The invention discloses a repairing process of an old concrete column, which comprises the following steps of A, adding a certain amount of streptomyces microflavus powder and calcium lactate or calcium acetate into fresh concrete; B. installing a pouring template on the concrete column, and injecting fresh concrete into the template; C. in the new mixingSpraying pure water once every 6-8 hours at the joint of the concrete and the old concrete column, and injecting CO2 gas into the joint for 1 hour; D. and curing until the concrete is solidified. The invention also discloses a template structure used in the repair process of the old concrete column. The streptomyces microflavus can absorb and convert CO2 in the air, and the microorganisms can absorb and convert CO2 in the air into CO3 2‑And Ca2+ and CO in calcium lactate or calcium acetate3 2‑The CaCO3 generated by the reaction can better connect the joint of the fresh concrete and the old concrete column, and improve the bonding strength of the fresh concrete and the old concrete column.
Description
Technical Field
The invention relates to a repairing process of an old concrete column. The invention also relates to a template structure used in the repair process of the old concrete column.
Background
In traditional cylinder is restoreed, generally directly pour into the damaged department of cylinder that the template surrounded with the concrete, but fresh concrete and cylinder body concrete are difficult firmly to combine, lead to the damaged department of repairing to form the crack very easily, peel off from the cylinder easily after long-term the use.
Disclosure of Invention
The invention aims to solve the technical problem of providing a repairing process of an old concrete column, which can ensure that the bonding strength of fresh concrete and a column body is higher. The technical problem to be solved by the invention also includes providing a formwork structure used in the repair process of the old concrete column.
Therefore, the repair process of the old concrete column provided by the invention is characterized in that: comprises A, fresh concrete, adding a certain amount of streptomyces microflavus powder and calcium lactate or calcium acetate into the fresh concrete; B. installing a pouring template on the concrete column, and injecting fresh concrete into the template; C. spraying pure water at the joint of the fresh concrete and the old concrete column every 6-8 hours, and injecting CO2 gas into the joint for 1 hour at the pressure of 0.1 MPa; D. and curing until the concrete is solidified.
The formwork structure used in the repair process of the old concrete column comprises four formworks, wherein at least one formwork is provided with a pouring hole, a sealing plug is arranged at the pouring hole, the formworks are tightly hooped with cross rods, through holes are formed in two ends of each cross rod, a counter-pull screw rod penetrates through the through holes of the front cross rod and the rear cross rod to be in counter-pull connection, each pair of oppositely distributed formworks are at least provided with two pairs of cross rods along the height direction to be matched with the counter-pull screw rods to be clamped and fixed, and the matching positions of the formworks and the surface of a column body and the formworks are sealed by rubber rings and reinforced by sealant.
The invention has the technical effects that: the streptomyces microflavus used in the invention can adsorb and convert CO2 in the air, and the microorganism can adsorb and convert CO2 in the air into CO3 2-And Ca2+ and CO in calcium lactate or calcium acetate3 2-CaCO3 is generated through reaction, so that chemical reaction at the joint of the fresh concrete and the old concrete column can be better realized to form CaCO3 with extremely high strength, and the bonding strength of the CaCO3 and the old concrete column is improved.
Drawings
FIG. 1 is a schematic cross-sectional structural view of a template configuration provided by the present invention.
Fig. 2 is a schematic structural plan view of the template configuration provided by the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following drawings and examples, wherein the specific examples are provided for the purpose of illustration only and are not intended to limit the invention.
The repair process of the old concrete column comprises the steps of A, adding a certain amount of streptomyces microflavus powder and calcium lactate or calcium acetate into fresh concrete; B. installing a pouring template on the concrete column, and injecting fresh concrete into the template; C. spraying pure water at the joint of the fresh concrete and the old concrete column every 6-8 hours, and injecting CO2 gas into the joint for 1 hour at the pressure of 0.1 MPa; D. curing for 24-48 hr after the concrete is solidified, and removing the form. In the embodiment, 1-3g of streptomyces microflavus is added into each kilogram of fresh concrete, the streptomyces microflavus can absorb and convert CO2 in the air, and the microorganisms can absorb and convert CO2 in the air into CO3 2-Calcium lactate or calcium acetate is added into the fresh concrete, 1-3g of calcium lactate or calcium acetate is added into each kilogram of fresh concrete, and Ca2+ and CO in the calcium lactate or the calcium acetate3 2-Reacting to generate CaCO 3; the joint of the fresh concrete and the old concrete column can be firmly connected better.
The invention also provides a formwork structure used in the old concrete column repairing process, which comprises four formworks 1, wherein at least one formwork 1 is provided with a pouring hole 2, two sides of each formwork 1 are respectively provided with an upper aerated pouring water hole 3 and a lower aerated pouring water hole 4, the upper aerated pouring water hole 3 and the lower aerated pouring water hole 4 are respectively provided with a sealing plug 5, the pouring hole 2 is provided with a sealing door, the formwork 1 is tightly hooped with a cross rod 6, two ends of the cross rod 6 are provided with through holes, a counter-pull screw 8 penetrates through the through holes of the front cross rod 6 and the rear cross rod 6 to be in counter-pull connection, each pair of oppositely distributed formworks 1 are respectively provided with at least two pairs of cross rods 6 along the height direction to be clamped and fixed by the counter-pull screw 8, and the matching part of the formwork 1 and the surface of the column body and the formwork 1 are sealed by. At least two clamping blocks 10 with clamping grooves 9 are transversely distributed at the position where the cross rod 6 is arranged on the template 1, and the cross rod 6 is embedded into the clamping grooves 9. An operator can pour concrete through the pouring hole 2 and inject CO2 and water through the upper aerated pouring water hole 3 and the lower aerated pouring water hole 4.
Claims (3)
1. A repairing process of an old concrete column is characterized by comprising the following steps: comprises A, fresh concrete, adding a certain amount of streptomyces microflavus powder and calcium lactate or calcium acetate into the fresh concrete; B. installing pouring templates on the concrete column, wherein the pouring templates comprise four templates, at least one template is provided with a pouring hole, the two sides of each template are respectively provided with an upper aerated pouring water hole and a lower aerated pouring water hole, the upper aerated pouring water hole and the lower aerated pouring water hole are respectively provided with a sealing plug, the pouring hole is provided with a sealing door, the templates are tightly hooped with a cross rod, the two ends of the cross rod are provided with through holes, at least two clamping blocks with clamping grooves are transversely distributed at the position where the cross rod is arranged on the template, the cross rod is embedded in the clamping grooves, the split screws penetrate through the through holes of the front cross rod and the rear cross rod to be split and connected, at least two pairs of cross rods are arranged in each pair of oppositely distributed templates along the height direction to be matched with the split screws to be clamped and fixed, the matching positions of the templates and the surface of the cylinder body and the templates are sealed by rubber rings and reinforced by sealant, and fresh concrete is injected into the templates; C. spraying pure water at the joint of the fresh concrete and the old concrete column every 6-8 hours, and injecting CO2 gas into the joint for 1 hour at the pressure of 0.1 MPa; D. and curing until the concrete is solidified.
2. The process for repairing an old concrete column according to claim 1, wherein: 1-3g of streptomyces microflavus is added into each kilogram of fresh concrete.
3. A process for repairing an old concrete column according to claim 1 or 2, wherein: 1-3g of calcium lactate or calcium acetate is added into each kilogram of the fresh concrete.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711083348.1A CN107859350B (en) | 2017-11-07 | 2017-11-07 | Repairing process of old concrete column and template structure used by repairing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711083348.1A CN107859350B (en) | 2017-11-07 | 2017-11-07 | Repairing process of old concrete column and template structure used by repairing process |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107859350A CN107859350A (en) | 2018-03-30 |
| CN107859350B true CN107859350B (en) | 2020-03-20 |
Family
ID=61701094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711083348.1A Expired - Fee Related CN107859350B (en) | 2017-11-07 | 2017-11-07 | Repairing process of old concrete column and template structure used by repairing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107859350B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109138477A (en) * | 2018-08-25 | 2019-01-04 | 广州天衣防水补强新技术开发有限公司 | Buildings waterproof blocking method |
| CN115110795A (en) * | 2022-06-17 | 2022-09-27 | 攀钢集团西昌钢钒有限公司 | Method and structure for repairing hopper wall of large cement product |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2004520C2 (en) * | 2010-04-07 | 2011-10-11 | Univ Delft Tech | HEALING AGENT FOR SELF-HEALING CEMENTIOUS MATERIALS. |
| KR101343086B1 (en) * | 2012-05-30 | 2014-01-16 | 한국과학기술원 | Inorganic Grouting Material, Method for Manufacturing the Same, and Method for Reparing Crack of Concrete |
| CN102936964B (en) * | 2012-11-04 | 2015-02-18 | 西安建筑科技大学 | Construction method of high elongation concrete embedded constructional column |
| CN103342484B (en) * | 2013-07-18 | 2014-09-03 | 东南大学 | Method for repairing crack of cement-based material |
| CN106568698B (en) * | 2016-11-03 | 2019-04-16 | 天津大学 | It is a kind of to utilize microorganism remediation distress in concrete and permeability test method |
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2017
- 2017-11-07 CN CN201711083348.1A patent/CN107859350B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN107859350A (en) | 2018-03-30 |
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Granted publication date: 20200320 Termination date: 20211107 |